osu-lazer/osu.Game.Rulesets.Taiko/Objects/TaikoHitObject.cs

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.

using System;
using System.Threading;
using osu.Framework.Bindables;
using osu.Game.Rulesets.Judgements;
using osu.Game.Rulesets.Objects;
using osu.Game.Rulesets.Scoring;
using osu.Game.Rulesets.Taiko.Judgements;
using osu.Game.Rulesets.Taiko.Scoring;

namespace osu.Game.Rulesets.Taiko.Objects
{
    public abstract class TaikoHitObject : HitObject
    {
        /// <summary>
        /// Default size of a drawable taiko hit object.
        /// </summary>
        public const float DEFAULT_SIZE = 0.45f;

        /// <summary>
        /// Scale multiplier for a strong drawable taiko hit object.
        /// </summary>
        public const float STRONG_SCALE = 1.4f;

        /// <summary>
        /// Default size of a strong drawable taiko hit object.
        /// </summary>
        public const float DEFAULT_STRONG_SIZE = DEFAULT_SIZE * STRONG_SCALE;

        public readonly Bindable<bool> IsStrongBindable = new BindableBool();

        /// <summary>
        /// Whether this <see cref="TaikoHitObject"/> can be made a "strong" (large) hit.
        /// </summary>
        public virtual bool CanBeStrong => true;

        /// <summary>
        /// Whether this HitObject is a "strong" type.
        /// Strong hit objects give more points for hitting the hit object with both keys.
        /// </summary>
        public bool IsStrong
        {
            get => IsStrongBindable.Value;
            set
            {
                if (value && !CanBeStrong)
                    throw new InvalidOperationException($"Object of type {GetType()} cannot be strong");

                IsStrongBindable.Value = value;
            }
        }

        protected override void CreateNestedHitObjects(CancellationToken cancellationToken)
        {
            base.CreateNestedHitObjects(cancellationToken);

            if (IsStrong)
                AddNested(new StrongHitObject { StartTime = this.GetEndTime() });
        }

        public override Judgement CreateJudgement() => new TaikoJudgement();

        protected override HitWindows CreateHitWindows() => new TaikoHitWindows();
    }
}